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Experimental Study of Boundary-Layer Bleed Impact on Ramjet Inlet Performance

Herrmann, Dirk and Blem, Sergej and Gülhan, Ali (2011) Experimental Study of Boundary-Layer Bleed Impact on Ramjet Inlet Performance. Journal of Propulsion and Power, 27 (6), pp. 1186-1195. AIAA. DOI: 10.2514/1.56382. ISSN 0748-4658.

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The performance of different boundary-layer bleed systems of a two-dimensional ramjet inlet has been investigated experimentally. The main objective of the study has been to identify the boundary-layer bleed geometry that increases the inlet’s performance and to stabilize the subcritical condition (i.e., later buzzing). Experiments have therefore been carried out with varied boundary-layer bleed geometries at an angle of attack of 0 deg and at Mach numbers ranging from 2.5 to 3.5. The results show that the effectiveness of a boundary-layer bleed system depends on shock, boundary-layer interaction, unsteadiness of the flow, and flow separation.

Document Type:Article
Title:Experimental Study of Boundary-Layer Bleed Impact on Ramjet Inlet Performance
AuthorsInstitution or Email of Authors
Herrmann, Dirkdirk.herrmann@dlr.de
Blem, Sergejsergej.blem@dlr.de
Gülhan, Aliali.guelhan@dlr.de
Date:November 2011
Journal or Publication Title:Journal of Propulsion and Power
Refereed publication:Yes
In Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 1186-1195
Keywords:Ramjet inlet, boundary layer bleed system, supersonic flow
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Military Technologies (old)
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology
Deposited By: Dirk Herrmann
Deposited On:05 Jan 2012 15:35
Last Modified:27 Mar 2015 15:33

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